feat: add embeddable pet widget endpoint

Serves a self-contained JavaScript widget at /embed/pets.js that renders available pets in a Shadow DOM grid. Supports data attributes for limit, species, columns, and theme. CORS-enabled for embedding on partner sites.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/embed/pets.js/+server.ts

@@ -0,0 +1,104 @@
+import type { RequestHandler } from './$types';
+import { db } from '$lib/server/db';
+import { pets, petPhotos } from '$lib/server/schema';
+import { eq, and } from 'drizzle-orm';
+
+export const GET: RequestHandler = async ({ url }) => {
+	// Fetch available pets with primary photos
+	const rows = await db
+		.select({
+			id: pets.id,
+			name: pets.name,
+			slug: pets.slug,
+			breed: pets.breed,
+			age: pets.age,
+			sex: pets.sex,
+			species: pets.species,
+			photoUrl: petPhotos.url
+		})
+		.from(pets)
+		.leftJoin(petPhotos, and(eq(petPhotos.petId, pets.id), eq(petPhotos.isPrimary, true)))
+		.where(and(eq(pets.status, 'available'), eq(pets.published, true)))
+		.limit(20);
+
+	const petsJson = JSON.stringify(rows);
+	const siteUrl = process.env.PUBLIC_SITE_URL || url.origin;
+
+	const js = `
+(function() {
+	var container = document.getElementById('fosterflow-pets');
+	if (!container) { console.warn('FosterFlow: #fosterflow-pets not found'); return; }
+
+	var limit = parseInt(container.dataset.limit || '12');
+	var species = container.dataset.species || '';
+	var columns = parseInt(container.dataset.columns || '3');
+	var theme = container.dataset.theme || 'light';
+
+	var pets = ${petsJson};
+	if (species) pets = pets.filter(function(p) { return p.species === species; });
+	pets = pets.slice(0, limit);
+
+	var shadow = container.attachShadow({ mode: 'open' });
+
+	var style = document.createElement('style');
+	style.textContent = \`
+		:host { display: block; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
+		.ff-grid { display: grid; grid-template-columns: repeat(\${columns}, 1fr); gap: 16px; }
+		@media (max-width: 768px) { .ff-grid { grid-template-columns: repeat(2, 1fr); } }
+		@media (max-width: 480px) { .ff-grid { grid-template-columns: 1fr; } }
+		.ff-card { border-radius: 12px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,0.1); transition: box-shadow 0.2s; background: \${theme === 'dark' ? '#1f2937' : '#fff'}; }
+		.ff-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
+		.ff-card a { text-decoration: none; color: inherit; display: block; }
+		.ff-img { aspect-ratio: 4/3; background: \${theme === 'dark' ? '#374151' : '#f3f4f6'}; overflow: hidden; display: flex; align-items: center; justify-content: center; }
+		.ff-img img { width: 100%; height: 100%; object-fit: cover; }
+		.ff-img .ff-placeholder { font-size: 2rem; }
+		.ff-info { padding: 12px; }
+		.ff-name { font-weight: 700; font-size: 1rem; color: \${theme === 'dark' ? '#f9fafb' : '#111827'}; margin: 0 0 4px; }
+		.ff-meta { font-size: 0.8rem; color: \${theme === 'dark' ? '#9ca3af' : '#6b7280'}; margin: 0; }
+		.ff-footer { text-align: center; padding: 12px; font-size: 0.75rem; color: #9ca3af; }
+		.ff-footer a { color: #0d9488; text-decoration: none; }
+		.ff-empty { text-align: center; padding: 24px; color: #9ca3af; }
+	\`;
+	shadow.appendChild(style);
+
+	var wrapper = document.createElement('div');
+
+	if (pets.length === 0) {
+		wrapper.innerHTML = '<div class="ff-empty">No pets available at the moment.</div>';
+	} else {
+		var grid = document.createElement('div');
+		grid.className = 'ff-grid';
+		pets.forEach(function(pet) {
+			var card = document.createElement('div');
+			card.className = 'ff-card';
+			var photoHtml = pet.photoUrl
+				? '<img src="' + '${siteUrl}' + pet.photoUrl + '" alt="' + pet.name + '">'
+				: '<span class="ff-placeholder">🐾</span>';
+			card.innerHTML = '<a href="${siteUrl}/pets/' + pet.slug + '" target="_blank">' +
+				'<div class="ff-img">' + photoHtml + '</div>' +
+				'<div class="ff-info">' +
+				'<p class="ff-name">' + pet.name + '</p>' +
+				'<p class="ff-meta">' + (pet.breed || pet.species) + (pet.age ? ' · ' + pet.age : '') + ' · ' + pet.sex + '</p>' +
+				'</div></a>';
+			grid.appendChild(card);
+		});
+		wrapper.appendChild(grid);
+	}
+
+	var footer = document.createElement('div');
+	footer.className = 'ff-footer';
+	footer.innerHTML = 'Powered by <a href="https://fosterflow.app" target="_blank">FosterFlow</a>';
+	wrapper.appendChild(footer);
+
+	shadow.appendChild(wrapper);
+})();
+`;
+
+	return new Response(js, {
+		headers: {
+			'Content-Type': 'application/javascript',
+			'Cache-Control': 'public, max-age=300',
+			'Access-Control-Allow-Origin': '*'
+		}
+	});
+};